To test whether gluten-sensitive people are more allergic to fructans, researchers at Norwegian University of Oslo and Monash University in Australia recruited 59 non-celiac adults on a gluten-free diet to participate in research.
First, they gave them three types of cereal bars containing gluten, fructans or none.
The volunteers ate one every day for a week, waiting seven days between testing sessions of new bars. Since the bars are the same, people do not know if they are eating fructans, gluten, or both.
It turns out that the fructan bar triggered 15% more bloating and a 13% increase in gastrointestinal distress compared to the control bar.
The gluten bar had no effect. The results are similar to those of a 2013 study in which non-celiac patients who eat gluten to relieve intestinal problems found no difference in symptoms when they eat identical meals that contain or contain gluten. .
According to Jane Muir of Monash University, fructans are probably the reason why people with irritable bowel syndrome do not see improvement when they adopt a gluten-free diet.
Some gluten-free products like chickpeas also contain fructans. The scientists concluded that fructans are also the reason why placebo-controlled studies have found that gluten has any effect, and why it has been so difficult to understand how gluten causes so many problems for non-users. celiacs.
“Originally it was assumed that gluten was responsible for celiac disease and that people felt better when they stopped eating wheat,” Muir said. “Looks like this initial guess was wrong.”
The results of this research are consistent with findings from six recent trials that confirm that approximately 70% of people with IBS experience improved symptoms when they remove fructans and other nutrients from a group known as FODMAPS.
As New Scientist reports, FODMAPS stands for fermentable oligosaccharides, disaccharides, monosaccharides and polyols. Short sugar chains are difficult to digest.
They draw water and ferment in the large intestine by gas-producing bacteria. This causes a slight stretching of the bowel, especially noticeable in individuals with irritable bowel syndrome or with hypersensitive nerve endings in the intestines.
She said :
Although further research is needed, it seems clear that fructans are a culprit and more people need to be aware of them. The implications of this study will be immense, especially for those who are hypersensitive to food.